Heating-stove



(No Model.) Sheets-sheet 1;

J. W. GUMMBR.

HEATING STOVE. No. 378,871. Patented Mar. 6, 1888.

agiarney (No Model.) l 3 sheetssheet 2. J. W.. CUMMER.

HEATING STVE. No. 378,871. Patented Mar. 6, 1888.

'(No Model.) 3 sheets-sheet s.

J..W. CUMMER.

HEATINGSTOVE. v No. 378,871. Patented Mar. 6, 1888.

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'UNITED STATES JAMES WALTER CUMMER,

PATENT @risica OF CADILLAC, MICHIGAN.

HEATING-STOVE.

SPECIFICATION forming part of Letters Patent No. 378,871, dated March 6, 1888.

` Application filed December 13, 18,36. Serial No. 221,439. (No model.)

Zo @ZZ whom it may concern:

Be it known that I, JAMES WALTER CUM- MER, a citizen ol' the United States, residing at Cadillac, in the county of Wexford and State of Michigan, have invented certain new and useful Improvements in Heating-Stoves; and I do hereby declare that thefollowingisa full, clear, and exact description of the invention, which will 'enable others skilled in the art to which it appertains to makeand use the same.

The invention relates to improvements in heating-stoves of the class in which the cold air is heated by its passage through tubes eX- posed to the radiating heat of the stove or fu'rnace, as hereinafter described.

In the accompanying drawings, Figure l is a vertical sectional elevation of the stove ou linea x, Fig. 2. Fig. 2 is a transverse section online y y, Fig. l. Fig. 3 is a bottom view of the drum in the body of the stove. Fig. 4 is a vertical sectional elevation of a modified form of stove, taken on line z z', Fig. 5; and Fig. 5 is a transverse section on line z z', Fig. 4. Fig. 6 is a view ofthe drum shown in the modification.

Similar letters of reference refer to correspondmg parts throughout the specification and drawings. f

The stove shown in Fig. 1 is designed as a base-burner lfor coal or coke, while that shown in Fig. 2 is const-ructed on the principle of the Franklin stove. Both may be adapted to burn wood without departing from the spirit of my invention.

A represents the iirepot, and B, Fig. l, the magazine.

D is the dome of the fire-pot or'body proper of the stove, provided with a central flanged opening, d, which supports the magazine B, doors (2^ at the sides, and a series of iianged openings, d?, about its center. Resting upon this dome is a drum, E, having three series of openings, (indicated by c e e2, respectively.) The openings e are in the bottom of the drum and register with and iit closely about the hanged openings cl2 in the dome. The openings e' likewise are in the bottom of the drum, intermediate of the openings c, and removed nearer the outer edge of the drum, so that the respective series of openings will be separated by suitable margins. The openings e? are in the t'op of the drum, immediately over the openings e', and are of about one-third greater diameter than the said openings.

F represents a drum, which in the main is a duplicate of the drum E, and is rmly secured about the top of the magazine. This drum has openings f in its top corresponding to the openings e in the drum E, and other openings, f2, in its bottom corresponding to openings e2 in said drum E.

Fitting closely about the openings ef, and connecting them, is the cold-air tube G, and between the openings elf2 is the hot-air iiue H. These tubes and lues being of the same diameter as the openings with which they are connected, and said openings being arranged with a common vertical center, it follows that as one set of openings is larger than the other the smaller pipe or tube, G, will be located within the larger pipe or iiue, H, with a space between said pipes or ues equal to one-half the difference in their diameters.

`I is a crown-plate having a central opening adapted to the top ot' the magazine, and a series of small openings, z, corresponding to and registering with the tubes G, whereby the air passing through said tubes is discharged into the room.

A cylindricaljacket, K, incloses the entire structure hereinbefore described. rIhis jacket extends from the base to the top of the stove, and is of such Width or diameter as to leave an open space between it and the body of the stove throughout its entire length. The top of the jacket rests `within an overhanging flange, I, and inside of this flange and the jacket K are openings i for the passage of heated air into theroom. Cold air enters the space between the jacket and the stove proper through openings 7c around the bottom of the jacket or cylinder.

The operation is as follows: It will be observed that a channel is established for the products of combustion, first through the openings dz into the drum E, then through lues H to drum F,and thence to the chimney through a hole in the rear of the drum. (Shownin dotted lines in Fig. l.) Inasmuch as cold or fresh air envelops` the drums and iiues within the jacket and lls thetubes G, it follows, when this air is heated by radiation from the stove and its tlues IOO and drums, that it will rise in the passages provided for it. This creates a current through the said fresh-air passages,which is fed through the openings in the bottom of the jacket, and circulation of the air being thus established, the process of heating the air continues according to the heat in the stove.

In Figs. 4 and 5 a modification is shown of the above-described stove. Here the heating devices are adapted to a Franklin stove, and extend only'7 half-way around the bottom and top. The jacket K is in two portions, separated by the ilanged plate Z, which is perforated by the apertures m., Figs. 5 and 6, around its outer edge, to admit fresh air into the space about the tubes H inside the jacket K, and near the top of said jacket are a series of apertures, n, to admit the air thus heated into the room.

In conclusion, it may be observed that While I prefer the methods of construction described above I do not confine myself to them, but may make use of any form of construction which does not depart from the spirit of my invention.

Having thus described 1nyinventio11,what I claim as new, and desire to secure by Letters Patent, is-

l. In a stove, a jacket extending from its base to its top and provided with fresh-air in lets, in combination with two drums Within the jacket and apart therefrom to leave an airpassage between said parts, fresh-air tubes passing through both drums, and heat-carrying lines connecting the drums and enveloping the fresh-air tubes, whereby the heat in the drums and on both sides of the heat-carrying ilues is utilized to heat the air, substarr tially as set forth.

2. In a stove, ajaeket provided with freshair inlets, substantially as described, two drums connected by heating-lines, freslrair tubes passing through said drums and ilues, and communicating with the space between the stove and jacket at one end and with the open air at the other, all combined and arranged substantially as set forth.

3. In a stove, the combination of a dome above the firepot, having a series of openings, a drum communicating with'said dome, and a jacket outside said drum, in combination with a second drum above the first, heatcarrying fines connecting said drums, and fresh-air tubes passing through said lilies and drums, substantially as set forth.

JAMES VALTER CUMMER.

Witnesses:

G. A. SWaNsoN, A. G. FULLER. 

